It might take a bit longer to get a special page implemented on mw side (hard to get CR within a reasonable timeframe on the GlobalBlocking extension project) but I could try and rewrite the gadget at Meta. Would that work as a temporary solution?

@MarcoAurelio: I think "Special:MultiBlock" is a bit more similar to the MultiLock ;)

In T124607#1960319, @Glaisher wrote:

It might take a bit longer to get a special page implemented on mw side (hard to get CR within a reasonable timeframe on the GlobalBlocking extension project) but I could try and rewrite the gadget at Meta. Would that work as a temporary solution?

Of course. If you could also take a look at all other "mass" block scripts there (in the same Gadget) that'd be great until we have a page like this :-)

In T124607#1960356, @Luke081515 wrote:

@MarcoAurelio: I think "Special:MultiBlock" is a bit more similar to the MultiLock ;)

Indeed :-) I'm fine with that as well.

Is this going to end up duplicating a load of CentralAuth MultiLock code? :/

In T124607#1960683, @Krenair wrote:

Is this going to end up duplicating a load of CentralAuth MultiLock code? :/

I'd say -sorry for my ignorance here- it won't, because global blocks are handled with Extension:GlobalBlock, not with CentralAuth.

Since Extension:GlobalBlocking and Extension:CentralAuth are separate and work entirely separately, the actual process to global block is different to locking, yes. But there's still some things in common - you're going to want to give a list of users/IPs, see some info about them (edit count, etc.) and apply the same process to all with a given reason (and a markbotedits checkbox)

I just wonder whether we can abstract some of it out into MW core - something along the lines of https://www.mediawiki.org/wiki/Extension:MassAction

I've rewritten the gadget now and it seems to work okay. But please try to work with it in a predictable manner, I can't guarantee that it will work as expected always.

In T124607#1981775, @Glaisher wrote:

I've rewritten the gadget now and it seems to work okay. But please try to work with it in a predictable manner, I can't guarantee that it will work as expected always.

So far and until today the gadget is working fine but it has an annoying issue: when there's an already blocked IP in the list of IPs you're trying to globalblock, the script breaks horribly. Maybe it should skip them and continue or modify its block settings.

Change 829290 had a related patch set uploaded (by Tks4Fish; author: Tks4Fish):

[mediawiki/extensions/GlobalBlocking@master] [WIP] Add Special:MassGlobalBlock

https://gerrit.wikimedia.org/r/829290

This will likely be more useful once T17294: Allow globally blocking of accounts, so putting this on my radar.

@Tks4Fish are you still working on this?